JavaScript is a very popular client-side scripting language. This is a very popular and helpful scripting language that is very much helpful in web development. JavaScript is mainly used to write various scripts for different functions.

The language JavaScript is also known as ECMAScript (the untrademarked name used for the standard), is a dynamic programming language that is used as part of web browsers. We can classify JavaScript as a prototype-based scripting language with dynamic typing and first-class functions.

JavaScript is used in different environments that aren’t all web-based, in other types also, such as PDF documents, site-specific browsers, and desktop widgets etc. Newer and faster JavaScript virtual machines (VMs) and platforms built upon them have also increased the popularity of JavaScript for server-side web applications so now days most of the web developers use this scripting language for building web applications.

The language JavaScript was originally developed by Brendan Eich during working for Netscape Communications Corporation. As this language was very easy to use and very effective on work, so in very less amount of time it becomes very popular.